An HTTP proxy can trick libcurl into sending the origins credentials (Basic
password, or a Negotiate/Kerberos ticket) to the proxy itself, by answering
the CONNECT tunnel request with 401 WWW-Authenticate: instead of the
expected 407 Proxy-Authenticate:.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Red Hat Hardened Images | RedHat | curl-main-8.23.0-0.1.hum1 | * |
| Curl | Ubuntu | devel | * |
| Curl | Ubuntu | esm-infra-legacy/trusty | * |
| Curl | Ubuntu | esm-infra-legacy/xenial | * |
| Curl | Ubuntu | esm-infra/bionic | * |
| Curl | Ubuntu | esm-infra/focal | * |
| Curl | Ubuntu | jammy | * |
| Curl | Ubuntu | noble | * |
| Curl | Ubuntu | resolute | * |
| Curl | Ubuntu | stonking | * |
| Curl | Ubuntu | upstream | * |